Publication: An experimental evaluation of transient flows in a supersonic gun tunnel
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Date
2012
Authors
Amir A.A.-F.
Yusoff M.Z.
Ahmed D.I.
Journal Title
Journal ISSN
Volume Title
Publisher
Universiti Malaysia Pahang
Abstract
An experimental study has been performed to investigate transient flows in a supersonic gun tunnel. The experimental work was performed using a short duration high speed flow test facility at the Universiti Tenaga Nasional (UNITEN). A physical description of the facility along with the principles of operation is provided. The pressure history of the flow process was captured using a fast response pressure transducer at three stations located at the end of the facility. Experimental measurements of shock strength, peak pressure and shock wave speed change of Air-Air as a driver/driven gas are then presented and compared with a further set of experimental measurements using the gas combination of Helium-Air. The shock wave speed was measured experimentally with a two pressure transducers technique. The results showed that the existence of the piston has a very significant influence on both the moving shock wave and peak pressure value achieved. The results provide a very good estimate for the above-mentioned parameters obtained after diaphragm rupture, and also provide a better understanding of the parameters that affect the performance of the facility. � Universiti Malaysia Pahang.
Description
Keywords
Gun tunnel , Peak pressure , Shock strength , Shock wave speed , Pressure sensors , Pressure transducers , Supersonic aerodynamics , Transition flow , Experimental evaluation , Gun tunnel , High speed flows , Measurements of , Peak pressure , Pressure history , Shock strength , Short durations , Shock waves